honestly i think they under tuned windwalkers intentionally because of how dks were in s5.
probably a good idea, but they may have gone a bit overboard.
It's far more complicated then that. Windwalkers just have far to many abilities that are terrible and were not designed well.
Disable & Leg Sweep. You can be right on top of someone and because of lag you will get "Target out of range" on disable, and many times Leg Sweep will go off, the cooldown will get used up, but the target won't get hit because they were out of range even though you were right on top of them.
Simple fix for these two abilities would be to increase the range on them 5-10 yards. These are the two main control tools for staying on top of a target, and if they are failing a large bulk of the time that is a problem.
Healing Spear cost 60 energy for a 18-20k heal at level 90. What good is spending over half your energy for a 20k heal when you have 400k hps, and people are critting for 120k? lol
The tier2 talents are horrible healing alternatives for windwalkers. I have been pushing for a windwalker exclusive glyph that makes chi-wave self only hot.
Expel Harm needs a boost in healing or a major cooldown reduction. 20k heal on a 15sec cooldown?